miden-crypto/src/hash/rescue/rpo/tests.rs
src/hash/rescue/rpo/tests.rsRaw
1use proptest::prelude::*;
2use rand_utils::rand_value;
3
4use super::{
5 super::{apply_inv_sbox, apply_sbox, ALPHA, INV_ALPHA},
6 Felt, FieldElement, Hasher, Rpo256, RpoDigest, StarkField, ONE, STATE_WIDTH, ZERO,
7};
8use crate::Word;
9use alloc::{collections::BTreeSet, vec::Vec};
10
11#[test]
12fn test_sbox() {
13 let state = [Felt::new(rand_value()); STATE_WIDTH];
14
15 let mut expected = state;
16 expected.iter_mut().for_each(|v| *v = v.exp(ALPHA));
17
18 let mut actual = state;
19 apply_sbox(&mut actual);
20
21 assert_eq!(expected, actual);
22}
23
24#[test]
25fn test_inv_sbox() {
26 let state = [Felt::new(rand_value()); STATE_WIDTH];
27
28 let mut expected = state;
29 expected.iter_mut().for_each(|v| *v = v.exp(INV_ALPHA));
30
31 let mut actual = state;
32 apply_inv_sbox(&mut actual);
33
34 assert_eq!(expected, actual);
35}
36
37#[test]
38fn hash_elements_vs_merge() {
39 let elements = [Felt::new(rand_value()); 8];
40
41 let digests: [RpoDigest; 2] = [
42 RpoDigest::new(elements[..4].try_into().unwrap()),
43 RpoDigest::new(elements[4..].try_into().unwrap()),
44 ];
45
46 let m_result = Rpo256::merge(&digests);
47 let h_result = Rpo256::hash_elements(&elements);
48 assert_eq!(m_result, h_result);
49}
50
51#[test]
52fn merge_vs_merge_in_domain() {
53 let elements = [Felt::new(rand_value()); 8];
54
55 let digests: [RpoDigest; 2] = [
56 RpoDigest::new(elements[..4].try_into().unwrap()),
57 RpoDigest::new(elements[4..].try_into().unwrap()),
58 ];
59 let merge_result = Rpo256::merge(&digests);
60
61 // ------------- merge with domain = 0 ----------------------------------------------------------
62
63 // set domain to ZERO. This should not change the result.
64 let domain = ZERO;
65
66 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
67 assert_eq!(merge_result, merge_in_domain_result);
68
69 // ------------- merge with domain = 1 ----------------------------------------------------------
70
71 // set domain to ONE. This should change the result.
72 let domain = ONE;
73
74 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
75 assert_ne!(merge_result, merge_in_domain_result);
76}
77
78#[test]
79fn hash_elements_vs_merge_with_int() {
80 let tmp = [Felt::new(rand_value()); 4];
81 let seed = RpoDigest::new(tmp);
82
83 // ----- value fits into a field element ------------------------------------------------------
84 let val: Felt = Felt::new(rand_value());
85 let m_result = Rpo256::merge_with_int(seed, val.as_int());
86
87 let mut elements = seed.as_elements().to_vec();
88 elements.push(val);
89 let h_result = Rpo256::hash_elements(&elements);
90
91 assert_eq!(m_result, h_result);
92
93 // ----- value does not fit into a field element ----------------------------------------------
94 let val = Felt::MODULUS + 2;
95 let m_result = Rpo256::merge_with_int(seed, val);
96
97 let mut elements = seed.as_elements().to_vec();
98 elements.push(Felt::new(val));
99 elements.push(ONE);
100 let h_result = Rpo256::hash_elements(&elements);
101
102 assert_eq!(m_result, h_result);
103}
104
105#[test]
106fn hash_padding() {
107 // adding a zero bytes at the end of a byte string should result in a different hash
108 let r1 = Rpo256::hash(&[1_u8, 2, 3]);
109 let r2 = Rpo256::hash(&[1_u8, 2, 3, 0]);
110 assert_ne!(r1, r2);
111
112 // same as above but with bigger inputs
113 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6]);
114 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 0]);
115 assert_ne!(r1, r2);
116
117 // same as above but with input splitting over two elements
118 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7]);
119 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0]);
120 assert_ne!(r1, r2);
121
122 // same as above but with multiple zeros
123 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0]);
124 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0]);
125 assert_ne!(r1, r2);
126}
127
128#[test]
129fn hash_elements_padding() {
130 let e1 = [Felt::new(rand_value()); 2];
131 let e2 = [e1[0], e1[1], ZERO];
132
133 let r1 = Rpo256::hash_elements(&e1);
134 let r2 = Rpo256::hash_elements(&e2);
135 assert_ne!(r1, r2);
136}
137
138#[test]
139fn hash_elements() {
140 let elements = [
141 ZERO,
142 ONE,
143 Felt::new(2),
144 Felt::new(3),
145 Felt::new(4),
146 Felt::new(5),
147 Felt::new(6),
148 Felt::new(7),
149 ];
150
151 let digests: [RpoDigest; 2] = [
152 RpoDigest::new(elements[..4].try_into().unwrap()),
153 RpoDigest::new(elements[4..8].try_into().unwrap()),
154 ];
155
156 let m_result = Rpo256::merge(&digests);
157 let h_result = Rpo256::hash_elements(&elements);
158 assert_eq!(m_result, h_result);
159}
160
161#[test]
162fn hash_test_vectors() {
163 let elements = [
164 ZERO,
165 ONE,
166 Felt::new(2),
167 Felt::new(3),
168 Felt::new(4),
169 Felt::new(5),
170 Felt::new(6),
171 Felt::new(7),
172 Felt::new(8),
173 Felt::new(9),
174 Felt::new(10),
175 Felt::new(11),
176 Felt::new(12),
177 Felt::new(13),
178 Felt::new(14),
179 Felt::new(15),
180 Felt::new(16),
181 Felt::new(17),
182 Felt::new(18),
183 ];
184
185 for i in 0..elements.len() {
186 let expected = RpoDigest::new(EXPECTED[i]);
187 let result = Rpo256::hash_elements(&elements[..(i + 1)]);
188 assert_eq!(result, expected);
189 }
190}
191
192#[test]
193fn sponge_bytes_with_remainder_length_wont_panic() {
194 // this test targets to assert that no panic will happen with the edge case of having an inputs
195 // with length that is not divisible by the used binary chunk size. 113 is a non-negligible
196 // input length that is prime; hence guaranteed to not be divisible by any choice of chunk
197 // size.
198 //
199 // this is a preliminary test to the fuzzy-stress of proptest.
200 Rpo256::hash(&[0; 113]);
201}
202
203#[test]
204fn sponge_collision_for_wrapped_field_element() {
205 let a = Rpo256::hash(&[0; 8]);
206 let b = Rpo256::hash(&Felt::MODULUS.to_le_bytes());
207 assert_ne!(a, b);
208}
209
210#[test]
211fn sponge_zeroes_collision() {
212 let mut zeroes = Vec::with_capacity(255);
213 let mut set = BTreeSet::new();
214 (0..255).for_each(|_| {
215 let hash = Rpo256::hash(&zeroes);
216 zeroes.push(0);
217 // panic if a collision was found
218 assert!(set.insert(hash));
219 });
220}
221
222proptest! {
223 #[test]
224 fn rpo256_wont_panic_with_arbitrary_input(ref bytes in any::<Vec<u8>>()) {
225 Rpo256::hash(bytes);
226 }
227}
228
229const EXPECTED: [Word; 19] = [
230 [
231 Felt::new(1502364727743950833),
232 Felt::new(5880949717274681448),
233 Felt::new(162790463902224431),
234 Felt::new(6901340476773664264),
235 ],
236 [
237 Felt::new(7478710183745780580),
238 Felt::new(3308077307559720969),
239 Felt::new(3383561985796182409),
240 Felt::new(17205078494700259815),
241 ],
242 [
243 Felt::new(17439912364295172999),
244 Felt::new(17979156346142712171),
245 Felt::new(8280795511427637894),
246 Felt::new(9349844417834368814),
247 ],
248 [
249 Felt::new(5105868198472766874),
250 Felt::new(13090564195691924742),
251 Felt::new(1058904296915798891),
252 Felt::new(18379501748825152268),
253 ],
254 [
255 Felt::new(9133662113608941286),
256 Felt::new(12096627591905525991),
257 Felt::new(14963426595993304047),
258 Felt::new(13290205840019973377),
259 ],
260 [
261 Felt::new(3134262397541159485),
262 Felt::new(10106105871979362399),
263 Felt::new(138768814855329459),
264 Felt::new(15044809212457404677),
265 ],
266 [
267 Felt::new(162696376578462826),
268 Felt::new(4991300494838863586),
269 Felt::new(660346084748120605),
270 Felt::new(13179389528641752698),
271 ],
272 [
273 Felt::new(2242391899857912644),
274 Felt::new(12689382052053305418),
275 Felt::new(235236990017815546),
276 Felt::new(5046143039268215739),
277 ],
278 [
279 Felt::new(9585630502158073976),
280 Felt::new(1310051013427303477),
281 Felt::new(7491921222636097758),
282 Felt::new(9417501558995216762),
283 ],
284 [
285 Felt::new(1994394001720334744),
286 Felt::new(10866209900885216467),
287 Felt::new(13836092831163031683),
288 Felt::new(10814636682252756697),
289 ],
290 [
291 Felt::new(17486854790732826405),
292 Felt::new(17376549265955727562),
293 Felt::new(2371059831956435003),
294 Felt::new(17585704935858006533),
295 ],
296 [
297 Felt::new(11368277489137713825),
298 Felt::new(3906270146963049287),
299 Felt::new(10236262408213059745),
300 Felt::new(78552867005814007),
301 ],
302 [
303 Felt::new(17899847381280262181),
304 Felt::new(14717912805498651446),
305 Felt::new(10769146203951775298),
306 Felt::new(2774289833490417856),
307 ],
308 [
309 Felt::new(3794717687462954368),
310 Felt::new(4386865643074822822),
311 Felt::new(8854162840275334305),
312 Felt::new(7129983987107225269),
313 ],
314 [
315 Felt::new(7244773535611633983),
316 Felt::new(19359923075859320),
317 Felt::new(10898655967774994333),
318 Felt::new(9319339563065736480),
319 ],
320 [
321 Felt::new(4935426252518736883),
322 Felt::new(12584230452580950419),
323 Felt::new(8762518969632303998),
324 Felt::new(18159875708229758073),
325 ],
326 [
327 Felt::new(14871230873837295931),
328 Felt::new(11225255908868362971),
329 Felt::new(18100987641405432308),
330 Felt::new(1559244340089644233),
331 ],
332 [
333 Felt::new(8348203744950016968),
334 Felt::new(4041411241960726733),
335 Felt::new(17584743399305468057),
336 Felt::new(16836952610803537051),
337 ],
338 [
339 Felt::new(16139797453633030050),
340 Felt::new(1090233424040889412),
341 Felt::new(10770255347785669036),
342 Felt::new(16982398877290254028),
343 ],
344];